15:00:50 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'npc'
 in plugin Citizens v1.0.8
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:37)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:12
9)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:2
87)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.
java:714)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:680)

        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:673)
        at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:32)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:223)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:75)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:399)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
Caused by: java.lang.NoSuchMethodError: com.nijikokun.register.payment.methods.i
Co5$iCoAccount.<init>(Lcom/iConomy/system/Account;)V
        at com.nijikokun.register.payment.methods.iCo5.getAccount(iCo5.java:47)
        at com.fullwall.Citizens.Economy.ServerEconomyInterface.playerHasEnough(
Unknown Source)
        at com.fullwall.Citizens.Economy.ServerEconomyInterface.hasEnough(Unknow
n Source)
        at com.fullwall.Citizens.Economy.EconomyHandler.canBuy(Unknown Source)
        at com.fullwall.Citizens.Commands.CommandExecutors.BasicExecutor.onComma
nd(Unknown Source)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:35)
        ... 12 more